This is an half-true story, so its much better to work than a totally made up one.
"I was returning from a party, with a male friend and a female friend, witch was an ex of mine, when we passed be 2 ghetto guys. One of them disrespected my female friend, i turned back and told them "Dude, thats not how you do things! You must excuse her", he talked back and then turned around and left. We then turned around...and i felt a rock hitting my leg. When my guy friend saw that, he was shocked, and picked the rock to throw it back at them, but i then told him "calm down! its ok, this is over!", but unfortunatly i was cripple for a few days

"
Give me your guesses